Happy to help.Scotland has _amazing_ accessibility of records at http://www.scotlandspeople.gov.ukhttp://www.scotlandspeople.gov.uk
This fall, they will be adding images of Old Parish Records before 1855...right now they just have the indices and the ability to easily order extracts.It only takes about 2 weeks to get abstracts sent from Scotland. As for everything after 1855 - birth, death, marriage - all the records are there, and each record has a wealth of info on it.1881, 1891 and 1901 census images are there as well.
From their marriage record, you find that Alexander, age 18, was born in Liff and Jane, age 26, was born in Dundee.Alexander's parents were James Clark (pensioner) and Betsy Steel. Jane's parents were Alexander Davidson and Ann Hutcheson.
Taking a look at the OPR birth index, since both births were before 1855, there wasn't a corresponding index entry for either birth that I could find quickly.I didn't do crazy search methods, though, which usually works.I'm sure you could find them with closer looking, or waiting until they refresh the index and add the images the fall.
In the OPR marriage index, we find that Alexander Davidson and Ann Hutcheson were married in 1830 in Dundee.Couldn't find the OPR marriage index entry for James and Elizabeth, but same notes apply as above.
Moving on to death records for Alexander and Jane.Alexander died March 13, 1899 at 76 Lockee Rd, St Mary, Dundee.He was a master mason.He suffered from cardiac disease for 16 mo. and bronchitis for 16 days.His parents are listed as James Clarke, army pensioner, deceased, and Betsy Steel, also deceased.His death was reported by his son Allan, living at 1 Marshall St., Lochee, Dundee.
Jane died March 26, 1911 at 24 Marshall St, Lochee, Dundee.She suffered from acute bronchitis for 7 days.Her parents are listed as Alexander Davidson, deceased and Ann Hutcheson, also deceased.Her death was also reported by Allan, so you know he was still living in Dundee as late as 1911.
I'm sure with some time (and patience) you can find the death records for Alexander's and Jane's parents; if the deaths were before 1855, you'll have to wait until the fall.Once you do find them, you'll have _their_ parents' names as well.
I find it helps with the death record searching to try to nail down if they died before or between census years.I did some quick census work, mainly for Alexander and Jane, and found them in 1881 (previous years not yet published).You'll often see age discrepancies, but this is definitely them:
Erin Place, Liff & Benvie, Forfar, Scotland
CLARKE, Alexander age 45 stone cutter
CLARKE, Jane age 47
CLARKE, James age 22 mechanic
CLARKE, Allan age 19 joiner
CLARKE, David age 17 clerk
CLARKE, Davidson age12
CLARKE, Ernest age 10
Then, in 1891:
Lawrence St., Liff & Benvie, Forfar, Scotland
CLARKE, Alexander age 55 builder
CLARKE, Jane age 57
CLARKE, Davidson age 21 clerk
CLARKE, Ernest age 19 engineeer turner
Obviously, there's plenty to track down yet in the census...the older kids, their families, etc.Could also get the marriage records and birth records of the kids, and so forth.It's all there.