duplication of names

Hi, I heard about you from Lost Cousins. I don't know if this is interesting but I have three daughters, 2 of them are named Jane born 1971, and Catherine born 1972. I did not know anything about my ancestors' names apart from my grandparents'. However, when I began to delve I found that my father's great great grandmother Catherine Raven 1813-1891 from Loweswater, Cumberland, had a sister Jane b 1810. Catherine married William Briggs 1808-1877 and among their children they had a Jane b1840 and a Catherine b1850. Cheers Angela Rigley