136 A.2d 451 Commonwealth ex rel. O’Brien v. O’Brien, Appellant. Supreme Court of Pennsylvania.May 29, 1957. November 18, 1957. Husband and wife — Support of children — Denial of paternity — Proof — Blood grouping tests — Acts of June 24, 1939, P. L. 872, and May 24, 1951, P. L. 402. 1. An action […]