  Deriving relationships between images and tracing back their history of
modifications are at the core of Multimedia Phylogeny solutions, which aim to
combat misinformation through doctored visual media. Nonetheless, most recent
image phylogeny solutions cannot properly address cases of forged composite
images with multiple donors, an area known as multiple parenting phylogeny
(MPP). This paper presents a preliminary undirected graph construction solution
for MPP, without any strict assumptions. The algorithm is underpinned by robust
image representative keypoints and different geometric consistency checks among
matching regions in both images to provide regions of interest for direct
comparison. The paper introduces a novel technique to geometrically filter the
most promising matches as well as to aid in the shared region localization
task. The strength of the approach is corroborated by experiments with
real-world cases, with and without image distractors (unrelated cases).
