Piilaniwahine is identified as the daughter of Kalanikaumakaowakea and Kaneakalau by SLK Peleioholani in his ROBINSON FAMILY genealogy.
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From genealogist Solomon Lehuanui Kalaniomaiheilu Peleioholani (in Ancestry of John Liwai Ena):

Look at Kamalalawalu (k), who married Piilani (w) of the chiefly class of Hilo, Hawaii and Kualoa, Koolau, Oahu. Six chiefly children were born by Kamalalawalu o Maui that raised the chiefly ancestral lines of the chiefs of Maui of Kama.

(a) Kauhiakama (k)
(b) Kalakauaehuakama (k)
(c) Paikalakauaakama (k)
(d) Piilanikapokulaniokama (w)
(e) Ka'unohoikapelakapuokakae (w)
(f) Kekaikuihaiaokeku'imanono (w).

Look at Kamalalawalu.
Here below are a large number of descendants that are living:
Kamalaiawalu married Piilani (w) chiefess, I.
1. Born was Kauhiakama (k)
2. Born was Kalakauaehuakama (k)
3. Born was Paikalakauaakama (k)
4. Born was Piilani-Kapokulani (w)
5. Born was Ka'unohoikapelakapuokakae (w)
6. Born was Kekaikuihalaokekuimanono (w)


(**Piilani also married Ahu-a-I, son of Hilo high chief ‘I, they begat Lonomaaikanaka, mother of Kalaninuiamamao)

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She is descended from Kila, son of Moikeha according to Kamakau.