Tithe Applotments 1823-1837 www.census.nationalarchives.ie
52 Masterson's, 1 in Parish Clooney, the remainder Killofin Parish
0 Whalen/Whelan checked as well as is spelling specific
Griffith Valuations: 1855 Co. Clare There are 572 in other Counties.
0 Masterson's (where did they go. 572 in Griffiths in other counties, Dublin for instance has 125
and Co. Cavan has 115.
If John Masterson 1824 was not born in Co. Clare you could try locating his birth in a online history foundation, I wouldn't even try Margaret Whalen (1833) as there are sure to be many. .www.rootsireland.ie
The names of their children will reflect the couple parents names.
Current on line telephone book has 0 Masterson's in Co. Clare, but 11 Cork, 1 Kerry and 1 Limerick www.igp-web.com