Parsing inflected forms may not always work as expected. If the following does not give the correct word, try Latin Words or Perseus.
1. Ascănĭus, a, um, adj., = Ἀσκάνιος, Ascanian: lacus, in Bithynia, near Nicœa, Plin. 5, 32, 43, § 148: portus, in Troas, id. 5, 30, 32, § 121: insulae, in the Ægean Sea, over against Troas, id. 5, 31, 38, § 138.
2. Ascănĭus, ii, m., = Ἀσκάνιος, son of Æneas and Creüsa, king of Lavinium, and founder of Alba Longa, Verg. A. 1, 271; Liv. 1, 3; cf. Wagner ad Verg. A. l. c., and id. Exc. ad Aen. 2, n. XVII. p. 438.