On this appeal appellants complain that the finding by the examiner that Mrs. Cather and Ross Bauman were the unestranged parents of Orville Bauman is not supported by credible evidence if the common meaning of the word “unestranged” is used. Whether a child and his parents are unestranged is a question of fact to be determined upon substantial evidence by the Industrial Commission. Derong v. Industrial Comm. 209 Wis. 88, 244 N. W. 591. In reviewing a finding of fact of the Industrial Commission the function of this court is to determine whether that finding is supported by credible evidence. Cornell W. P. Co. v. Industrial Comm. 195 Wis. 267, 218 N. W. 182; C. R. Meyer & Sons Co. v. Grady, 194 Wis. 615, 217 N. W. 408; Gerue v. Industrial Comm. 205 Wis. 68, 236 N. W. 528; Jasperson v. Industrial Comm. 231 Wis. 142, 285 N. W. 391; Harnischfeger Corp. v. Industrial Comm. 253 Wis. 613, 34 N. W. (2d) 678.

At the hearing the testimony as to the relationship between the boy and his parents was conflicting. Mrs. Cather, her mother, Mrs. Stone, and Ross Bauman, all testified to friendly relations. They claimed there was visiting and correspondence between the boy and his parents and interest in the boy’s welfare by the parents. Mrs. Cather testified that she had seen her son a little more than a month before his death. This was corroborated by Mrs. Stone.

Mr. and Mrs. Burt, with whom Orville lived for six months before his death, testified that, so far as information coming to their knowledge was concerned, the parents showed no inter *491 est in the boy. In fact he said things indicating that he had ill feeling toward them. The commission might well consider, as it evidently did, that because of the estrangement of his parents, resulting in depriving him of a rightful home, he was disappointed by the situation in which his parents had placed him, and his outbursts were the natural reaction of a boy thus unfortunately circumstanced.

The Industrial Commission, as trier of the facts, found that Mrs. Cather and Bauman were the unestranged parents of Orville Bauman. It is considered that there is credible evidence to sustain the finding.

Appellants contend that the claimants have not satisfied the burden of proof which is on them to show that they are the unestranged parents of Orville. Since there is sufficient evidence to sustain the finding of the Industrial Commission, the award must stand. The cases which, appellants rely on are not controlling. They are cases in which this court affirmed the Industrial Commission in its holding on the question of burden of proof.

By the Court. — Judgment affirmed.