Debbie, I have in interest in this John Calvert.His father was William, b inDanby Wiske, Yorkshire, date unknown, but death date was 9 Feb, 1548. I have John marrying Dorothy Leonnard, b in 1525 and d in 1611.Their son, Leonard, b in 1550 and d in 1611 married Alicia Crossland in 1575.She was born in 1559 in Crossland.I have five children born to them: George 1578, Thomas, unknown date, Mary l586, John 1587, and Leonard 1606.I have my doubts about Leonard's date as Alicia would have been 47 then. George, as you know, became Lord Baltimore the first. John was my ancestor and I can trace all my Calvert ancestors back to him.Some researchers have doubted that John and George were brothers.Do you have any way of proving that?Of course, I can't be certain about all my dates.For example you have Dorothy born in 1527.Who knows?I think I forgot to mention that I have John's death date as 9 May, 1566.You are the first person I have met who knows something about Calverts of that time!!