The O'Keefe's of Boscawen NH

I am researhing the O'Keefe (Keefe) families . John and Mary parents of Andrew who married Mary A Dowde in Andover Ma in 1871. All were supposively born in Ireland. Andrew and Mary had 2 sons born in So Andover Francis H and Frederic Ambrose. Francis married Margaret Plankey and Frederic died in the Spanish American War.Any help would be appreciated.

Also searching the Silver line. Direct desendants of Thomas and Katherine of Ispwich Ma. Have alot of info on this line and willing to share.