Mac Maoláin was a surname borne by a number of unrelated families in Gaelic Ireland, found in Breifne, Mide, Brega, Connacht and Ulster.
The saint's name was familiar enough in Mide to give rise to a number of derivative personal names, notably Máel Sechnaill (attested since the 9th century) and later also Gilla Sechnaill.