E. Cobham Brewer 1810–1897. Dictionary of Phrase and Fable. 1898.
Si Quis.
A notice to all whom it may concern, given in the parish church before ordination, that a resident means to offer himself as a candidate for holy orders; and SI QUIS—i.e. if anyone knows any just cause or impediment
thereto, he is to declare the same to the bishop.
