Shelly or Davin

Bridget Shelly of Dromard has a sister in Errill (in Co. Laois, next to Dromard) and a brother married in her fathers home, Joseph who has passed away. The sister was either Mary (b.1898) or Anne (b.1901) may have married a Davin or one of their children married a Davin. There must be children or grandchildren of either Mary or Anne in Errill. Let me know if anyone has information. Thank you.