Thanks for replying.I've found out a little more about William's family since I posted my message.Might be helpful to you, too.
There is another daughter, Octavia, who married Ruffin Bowers.She was married by 1850 and I believe is listed on the same census page with the other Lansdales.I also think (with the help of Ron Head) that he is the unknown male that was living with the Lansdales in 1840.
Mary J. never married.I've found her living with various sisters through the years and as you know she was buried as a Lansdale.
Marrah - I have not found anything to definitely verify it yet, but I believe this is Mariah/Maria/Marie, and that she married one of the Dyson boys who was living nearby in 1850.Some of my current generation Lansdale cousins have Dyson as their middle name (Ludwell Dyson Lansdale, III), so I have been researching that family, too, to figure out why and how they got the name.
John L. is John Sumner.He is the direct ancestor of my Lansdale cousins and his name is included in the baby book prepared for Ludwell Dyson Lansdale, II, by his grandparents at the time.
In some census years and in various findings on ancestry.com, I found several incidents where a Lansdale is living with or near a Marie L. Dyson.She had two children, one a son named William L. Dyson, and so I think the Dyson she married was the son William shown in the 1850.Apparently, William Sr. must have died soon after the 2nd child, because Marie is a widow in all census records I've found on her and she never had any more children. (And the children (son and daughter) were both still single and living with her well into their 30s! Makes me wonder if she was one of those very dominating and controlling mothers??)I feel pretty sure she is my John Sumner's sister which would explain why they are both in Texas at the same time.John was there in 1880 and is supposed to be there in 1900, but haven't found him yet.Although I have found city directory listings in the late 1890s for one of his children and for Marie Dyson - at one point the Lansdale son was living with Marie.
Another person in these forums reported that Lucinda Vanlandingham/Vallandingham was William M. Lansdale's first wife.There is a marriage record on ancestry.The Elizabeth that we see as the hoh/wife in 1850 is probably Elizabeth A. Smith (hence the presence of Ann Smith who is probably her sister) - I found a marriage record for Wm and Elizabeth on LDS - married in Warren Co., KY.
It makes sense that he would have two wives - explains the gap - but later census records I've found for John Sumner report his mother to be born in KY which fits for Lucinda but not for Elizabeth.But since I've only found John in one census so far, I can't compare.Maybe he just didn't know where his mother was born.
Have you been able to verify that it was our Wm. Lansdale who was a member of the Senate?I saw an entry on another website listing his name as a member, but knowing that there were other Wm. Lansdales around at the time, wasn't sure.I've written to the man who posted the data and he has promised to check it out for me.
Someone else in this form reported that our Wm. was also the man who created the KY Constitution (was it you?I forget who now).Do you know anything more about this?
In doing random searches on the internet, I have found several places (including Maryland) where Lansdales, Bealls, and Dyers were all in the same place and seemed to be closely tied.Interesting that they are all together again in MS in 1850.
So hope this helps you. If you have anything additional that would help me, would really appreciate the help.Look forward to hearing from you again.